EP 1225377 A4 20060208 - SEAL RING

Title (en)

SEAL RING

Title (de)

DICHTUNGSRING

Title (fr)

BAGUE D'ETANCHEITE

Publication

EP 1225377 A4 20060208 (EN)

Application

EP 00969894 A 20001019

Priority

JP 0007274 W 20001019
JP 29955099 A 19991021

Abstract (en)

[origin: EP1225377A1] A seal ring comprising 40 to 94 % by weight of a polytetrafluoroethylene powder, 3 to 30 % by weight of a heat resistant aromatic polyoxybenzoyl ester resin powder 3 to 30 % by weight of a graphite powder. A stable sealing effect can be obtained for a long period of time since a deformation of the seal ring is small for the use even under a high pressure and an abrasion of an opposite material can be inhibited even if the opposite material is a soft metal. Further a frictional force is small, and a change in a sliding torque is small. Therefore the seal ring is suitable as a seal ring for a power steering where operability and response of the sealing device can be enhanced and also as a seal ring for an automatic transmission which slides at high revolutions and as a seal ring for a shock absorber which is required to have a sealing property under reciprocating sliding environment. <IMAGE>

IPC 1-7

F16J 15/16

IPC 8 full level

F16F 9/36 (2006.01); F16J 15/10 (2006.01)

CPC (source: EP US)

F16F 9/368 (2013.01 - EP US); F16J 15/102 (2013.01 - EP US)

Citation (search report)

[X] US 5695197 A 19971209 - FARLEY MICHAEL L [US], et al
[X] US 4703076 A 19871027 - MORI SANAE [JP]
[X] US 5364682 A 19941115 - TANAKA TADASHI [JP], et al
[A] EP 0444589 A1 19910904 - SUMITOMO CHEMICAL CO [JP]
[X] PATENT ABSTRACTS OF JAPAN vol. 014, no. 017 (C - 675) 16 January 1990 (1990-01-16)
[X] PATENT ABSTRACTS OF JAPAN vol. 006, no. 197 (C - 128) 6 October 1982 (1982-10-06)
See references of WO 0131237A1

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 1225377 A1 20020724; EP 1225377 A4 20060208; CN 1379850 A 20021113; US 2002158424 A1 20021031; WO 0131237 A1 20010503

DOCDB simple family (application)

EP 00969894 A 20001019; CN 00814417 A 20001019; JP 0007274 W 20001019; US 12555802 A 20020419